Condensation of Silicic Acid in the Presence of Co(1-Vinylimidazole–Acrylic Acid)

Danilovtseva, Elena N.; Pal’shin, Viktor A.; Likhoshway, Yelena V.; Annenkov, Vadim V.

doi:10.1166/asl.2011.1262

Cited by 16 publications

(23 citation statements)

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“…Interaction between growing PSA nanoparticles and macromolecular chains oen results in stable soluble nanoparticles 63,64,85,[90][91][92][93]95,96,115,116,120,131,132 or in a product consisting of uniform spherical composite particles. 24,61,62,[65][66][67][68][69][70][71][75][76][77]98,99,[106][107][108]111,112,114,117,121,124,134,135,137,139,143,149,153,155,157 These variants exist in the case of relatively low silicon content in the system, when all PSA nanoparticles can nd chains of organic polymer.…”

Section: Polymer : Si Ratiomentioning

confidence: 99%

“…84,85,102 The same effect is probably dominant in the case of poly(N-methacryloyl-L-histidine), 102 poly(1-vinylpyrrolidone) 136 and PEG.…”

mentioning

confidence: 93%

“…The ability of PSA particles to interact with polymeric amines was employed 85,195 to create silicied materials by means of direct ink writing with 3D-printers. These studies are based on bioinspired concepts using matrix-assisted condensation of silicic acid.…”

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confidence: 99%

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Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

et al. 2017

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Silicon is among the most abundant elements on the Earth. It occurs in many minerals and plays an important role in several biochemical processes. Some living organisms use silicon dioxide as a substrate for building elements of their bodies. Unicellular diatom algae build frustules from silicon dioxide. The skeleton of siliceous sponges is a silicaprotein composite. Similarly, rice hulls which protect seeds, contain silica as an important component. The living organisms assimilate silicon from the environment in the form of silicic acid. However, the biochemical mechanisms involved in the transformation of silicic acid to solid siliceous materials are still poorly understood.Evidently, condensation of silicic acid in the living organisms proceeds under control of biopolymers and it is important to know how various types of polymers influence the condensation. Bio-inspired chemistry involving the interaction between polymeric silicic acid and functional polymers results in interesting composite materials, including nanoparticles and bulk materials. This review contains a brief description of the mechanism of silicic acid condensation in aqueous medium and also includes a discussion on various precursors of silicic acid. The main focus of the review is on the influence of polymers bearing nitrogen and oxygen-containing functional groups on silicic acid condensation starting from monomer to three-dimensional polymer. Influence of molecular weight of the organic polymer on the condensation and structure of the resulting product is also elaborated. The biological importance of the obtained data and strategies for novel applications of the synthesized composite materials are described in the concluding section of the review. The biomimetic condensation processes open up new vistas for development of novel materials and applications in the biomedical and process industries.

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Section: Polymer : Si Ratiomentioning

confidence: 99%

“…84,85,102 The same effect is probably dominant in the case of poly(N-methacryloyl-L-histidine), 102 poly(1-vinylpyrrolidone) 136 and PEG.…”

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confidence: 93%

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Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

et al. 2017

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“…Annenkov et al ., the IEP of poly(VIm‐ co ‐AA) is about 4.8 . In Danilovtseva, E. N.'s, the IEP of poly(VIm‐ co ‐AA) is between 3 and 7 . IEP of copolymers is pH range not a special value, probably because of the variety of monomers incorporated and the change of the composition.…”

Section: Effect Of Reaction Pressurementioning

confidence: 98%

Synthesis of cross‐linked homopolymers and copolymers of 1‐vinylimidazole in supercritical carbon dioxide for removal of Cr(VI) from aqueous solution

Chen

Cao

Wang

et al. 2013

Polymers for Advanced Techs

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In this work, cross‐linked poly(1‐vinylimidazole) (PVIm) and poly(1‐vinylimidazole‐co‐acrylic acid) [poly(VIm‐co‐AA)] polyampholytes microgel were synthesized by precipitation polymerization in supercritical carbon dioxide at 14 and 20 MPa. The obtained products were characterized by Fourier transform infrared spectroscopy and Energy‐dispersive X‐ray spectroscopy. The results indicate that the functional monomers including 1‐VIm and AA were cross‐linked in polymers successfully. Aggregate particles with diameters of approximately 200 nm were observed by scanning electron microscopy and particle size distribution. Surface area analysis showed that the surface area of microgel prepared at a pressure of 14 MPa are 40.28 m2/g. The swelling behavior of polyampholytes microgel was studied. The cross‐linking degrees of PVIm and copolymers can reach 92.6% and 98.1%. The effect of pH values of solution, contact time, adsorbent dosage, initial Cr(VI) concentration on adsorption capacity were also investigated. The results revealed that cross‐linked polymer has a high adsorption capacity of 306.0 mg/g for Cr(VI) in 130 mg/l solution at pH 2 and cross‐linker ratio of 27.3%. Copyright © 2013 John Wiley & Sons, Ltd.

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“…It was, therefore, suggested that the stabilized sol consists of polyamine–silica nanoparticle superstructures resulting from a self-assembly process driven by attractive interactions between positively charged polyamines and negatively charged silica particles [ 18 , 20 ]. Subsequent in vitro studies support the idea of polyamine-stabilized sols [ 21 – 22 ]. In contrast to the charged PAH, uncharged polymers such as polyvinylpyrrolidone or polyethylene glycol cannot undergo such a self-assembly process driven by electrostatic interactions [ 23 – 24 ].…”

Section: Introductionmentioning

confidence: 95%

Electrostatic interplay: The interaction triangle of polyamines, silicic acid, and phosphate studied through turbidity measurements, silicomolybdic acid test, and ²⁹Si NMR spectroscopy

Jantschke¹,

Spinde²,

Brunner³

2014

Beilstein J. Nanotechnol.

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SummaryThe discovery of long-chain polyamines as biomolecules that are tightly associated to biosilica in diatom cell walls has inspired numerous in vitro studies aiming to characterize polyamine–silica interactions. The determination of these interactions at the molecular level is of fundamental interest on one hand for the understanding of cell wall biogenesis in diatoms and on the other hand for designing bioinspired materials synthesis approaches. The present contribution deals with the influence of amines and polyamines upon the initial self-assembly processes taking place during polyamine-mediated silica formation in solution. The influence of phosphate upon these processes is studied. For this purpose, sodium metasilicate solutions containing additives such as polyallylamine, allylamine and others in the presence/absence of phosphate were investigated. The analyses are based mainly on turbidity measurements yielding information about the early aggregation steps which finally give rise to the formation and precipitation of silica.

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Condensation of Silicic Acid in the Presence of Co(1-Vinylimidazole–Acrylic Acid)

Cited by 16 publications

References 0 publications

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

Synthesis of cross‐linked homopolymers and copolymers of 1‐vinylimidazole in supercritical carbon dioxide for removal of Cr(VI) from aqueous solution

Electrostatic interplay: The interaction triangle of polyamines, silicic acid, and phosphate studied through turbidity measurements, silicomolybdic acid test, and ²⁹Si NMR spectroscopy

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Condensation of Silicic Acid in the Presence of Co(1-Vinylimidazole–Acrylic Acid)

Cited by 16 publications

References 0 publications

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

Synthesis of cross‐linked homopolymers and copolymers of 1‐vinylimidazole in supercritical carbon dioxide for removal of Cr(VI) from aqueous solution

Electrostatic interplay: The interaction triangle of polyamines, silicic acid, and phosphate studied through turbidity measurements, silicomolybdic acid test, and 29Si NMR spectroscopy

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Electrostatic interplay: The interaction triangle of polyamines, silicic acid, and phosphate studied through turbidity measurements, silicomolybdic acid test, and ²⁹Si NMR spectroscopy